tsukuyomi 0.5.3

Asynchronous Web framework for Rust
Documentation 
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//! Extractors for accessing the request-local data.

use {
    super::Extractor,
    crate::{error::Error, future::TryFuture, input::localmap::LocalKey},
};

pub fn remove<T>(
    key: &'static LocalKey<T>,
) -> impl Extractor<
    Output = (T,), //
    Error = Error,
    Extract = impl TryFuture<Ok = (T,), Error = Error> + Send + 'static,
>
where
    T: Send + 'static,
{
    super::ready(move |input| {
        input
            .locals
            .remove(key)
            .map(|x| (x,))
            .ok_or_else(missing_local_value)
    })
}

pub fn clone<T>(
    key: &'static LocalKey<T>,
) -> impl Extractor<
    Output = (T,), //
    Error = Error,
    Extract = impl TryFuture<Ok = (T,), Error = Error> + Send + 'static,
>
where
    T: Clone + Send + 'static,
{
    super::ready(move |input| {
        input
            .locals
            .get(key)
            .cloned()
            .map(|x| (x,))
            .ok_or_else(missing_local_value)
    })
}

fn missing_local_value() -> crate::Error {
    crate::error::internal_server_error("missing local value")
}